CN209709786U - Rotor, motor and mechanical structure - Google Patents
Rotor, motor and mechanical structure Download PDFInfo
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- CN209709786U CN209709786U CN201920734628.2U CN201920734628U CN209709786U CN 209709786 U CN209709786 U CN 209709786U CN 201920734628 U CN201920734628 U CN 201920734628U CN 209709786 U CN209709786 U CN 209709786U
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Abstract
The utility model provides a kind of rotor, motor and mechanical structure.Rotor includes rotor body, the first permanent-magnet pole and the second permanent-magnet pole are provided on the rotor body, first permanent-magnet pole and second permanent-magnet pole are alternately arranged along the circumferential direction of the rotor body, first permanent-magnet pole includes the different magnet steel of at least two coercivitys, the the first low-coercivity magnet steel and the first high-coercive force magnet steel of the middle part setting series arrangement of first permanent-magnet pole, the second low-coercivity magnet steel is arranged in the two sides of first permanent-magnet pole.After the utility model is using the first low-coercivity magnet steel and the series connection of the first high-coercive force magnet steel, the anti-demagnetization capability of first low-coercivity magnet steel is promoted, therefore in adjustable magnetic demagnetization process, bigger demagnetization current can be applied, the realization of the second low-coercivity magnet steel is set reversely to magnetize, entire motor magnetic linkage is reduced, the adjustable magnetic range of motor is promoted.
Description
Technical field
The utility model relates to technical field of driving, in particular to a kind of rotor, motor and mechanical knot
Structure.
Background technique
Conventional permanent magnet motor provides magnetic flux by permanent magnet, but permanent magnet provides magnetic field and fixes, and motor internal magnetic field is difficult to
It adjusts, efficiency when magneto being made to be difficult to take into account high and low frequency.And in the case where power supply voltage is fixed, limit
The maximum running frequency of motor.
Currently, most magneto all has magnetic field and is difficult to the shortcomings that adjusting, it is straight by input to result in motor maximum speed
The limitation of the factors such as busbar voltage is flowed, motor low speed, high-speed cruising area efficiency are difficult to the problems such as taking into account, in motor operation course
In, low-coercivity magnet steel is influenced by high-coercive force magnet steel, fills that demagnetization current is larger, will increase low-coercivity magnet steel to fill demagnetization difficult
Degree reduces electric efficiency.
In addition, existing part magneto solves the problems, such as to magnetize, electric current is bigger than normal, but it is inclined to equally exist demagnetization current
There is risk of demagnetizing in small, normal operation.There are also some magnetoes, solve the problems, such as that demagnetization current is less than normal, but this
The adjustable magnetic range of class cascaded structure is less than normal.
Utility model content
The main purpose of the utility model is to provide a kind of rotor, motor and mechanical structures, to solve existing skill
The small problem of the adjustable magnetic range of magneto in art.
To achieve the goals above, one aspect according to the present utility model provides a kind of rotor, including rotor
Ontology is provided with the first permanent-magnet pole and the second permanent-magnet pole, first permanent-magnet pole and second permanent magnetism on the rotor body
Pole is alternately arranged along the circumferential direction of the rotor body, and first permanent-magnet pole includes the different magnet steel of at least two coercivitys, institute
The the first low-coercivity magnet steel and the first high-coercive force magnet steel of the middle part setting series arrangement of the first permanent-magnet pole are stated, described first forever
The second low-coercivity magnet steel is arranged in the two sides of magnetic pole.
Further, the magnet steel of second permanent-magnet pole is the second high-coercive force magnet steel.
Further, the first high-coercive force magnet steel is identical with the coercivity of the second high-coercive force magnet steel or not
Together, when the coercivity difference of the first high-coercive force magnet steel and the second high-coercive force magnet steel, the first high coercive
The coercitive difference of power magnet steel and the second high-coercive force magnet steel is within 20%.
Further, the first low-coercivity magnet steel is identical with the coercivity of the second low-coercivity magnet steel or not
Together, when the coercivity difference of the first low-coercivity magnet steel and the second low-coercivity magnet steel, the first low coercive
The coercitive difference of power magnet steel and the second low-coercivity magnet steel is within 20%.
Further, first permanent-magnet pole is arranged in linear type, and the pole center line about first permanent-magnet pole
It is arranged symmetrically；Second permanent-magnet pole is in linear type or V-arrangement or W-shaped arrangement, and the pole center line pair about the second permanent-magnet pole
Claim setting.
Further, the first low-coercivity magnet steel and the first high-coercive force magnet steel are affixed predetermined by being arranged or being spaced
Gap setting.
Further, in first permanent-magnet pole, the first low-coercivity magnet steel and second lower coercivity magnetic
Steel is H in rotor dislocation distance radially, the second low-coercivity magnet steel the rotor radially
Width be H2, the first low-coercivity magnet steel is H3, the first high coercive in rotor width radially
Power magnet steel is H4 in rotor width radially, the second high-coercive force magnet steel the rotor radially
Width be H1, wherein -0.5H2≤H≤H3,1.5H2 >=H3 >=H2；0.5H2 >=H4 >=0.2H2, H2 >=1.2H1.
Further, the length of the first high-coercive force magnet steel is L2, and the length of the first high-coercive force magnet steel is
L4, the length of the first low-coercivity magnet steel are L3, and the length of the second high-coercive force magnet steel is L1, wherein 1.1L4 >=
L3≥L4；3.3L3 >=2L2 >=3L3, L1≤2L2+L3.
Further, the first low-coercivity magnet steel is alnico magnet.
Another aspect according to the present utility model, provides a kind of motor, including rotor, and the rotor is upper
The rotor stated.
It is according to the present utility model in another aspect, provide a kind of mechanical structure, including motor, the motor is above-mentioned
Motor.
It is high using part the first low-coercivity magnet steel of series connection and first in the application using the technical solution of the utility model
The structure of coercivity magnet steel, the first high-coercive force magnet steel help magnetic action to the first low-coercivity magnet steel, externally show coercivity
Promoted, guarantee the first low-coercivity magnet steel anti-demagnetization capability promoted, make the first low-coercivity magnet steel become magnetic flux during not by
To the influence of demagnetization current, remanent magnetism is constant, therefore when the second low-coercivity magnet steel plays adjustable magnetic during becoming magnetic flux, and second
The variation of low-coercivity magnet steel magnetic direction, the first low-coercivity magnet steel magnetism is constant, does not play the role of adjustable magnetic.
As it can be seen that first is low strong after the utility model is using the first low-coercivity magnet steel and the series connection of the first high-coercive force magnet steel
The anti-demagnetization capability of stupid power magnet steel is promoted, therefore is demagnetized process in adjustable magnetic, and bigger demagnetization current can be applied, and is made second low
The realization of coercivity magnet steel is reversely magnetized, and entire motor magnetic linkage is reduced.And in conventional structure, it is not provided with the first high coercivity magnetic
Steel magnetic assist cannot apply the structure of too big demagnetization current, therefore the demagnetization of the second low-coercivity magnet steel is limited, adjustable magnetic range
It is limited, and the structure of the rotor in the utility model can effectively improve adjustable magnetic range.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide a further understanding of the present invention, this is practical
Novel illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model.
In the accompanying drawings:
Fig. 1 diagrammatically illustrates the main view of the rotor of the utility model；
Fig. 2 diagrammatically illustrates the size marking figure of each structure of the rotor of the utility model.
Wherein, the above drawings include the following reference numerals:
10, rotor body；11, the first permanent-magnet pole；111, the first low-coercivity magnet steel；112, the second low-coercivity magnet steel；
113, the first high-coercive force magnet steel；12, the second permanent-magnet pole；121, the second high-coercive force magnet steel.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also be positioned with other different modes (be rotated by 90 ° or in other orientation, and
Respective explanations are made to the opposite description in space used herein above.
Referring to shown in Fig. 1 to Fig. 2, embodiment according to the present utility model provides a kind of motor, the electricity in the present embodiment
Machine especially variable flux motor.
However, the adjustable magnetic range of existing variable flux motor is smaller, for this purpose, to the rotor of motor in the application
Structure is improved.
Specifically, the rotor in the present embodiment includes rotor body 10, is provided with first on the rotor body 10
Permanent-magnet pole 11 and the second permanent-magnet pole 12, the first permanent-magnet pole 11 and the second permanent-magnet pole 12 are alternately arranged along the circumferential direction of rotor body 10,
First permanent-magnet pole 11 includes the different magnet steel of at least two coercivitys, wherein series arrangement is arranged in the middle part of the first permanent-magnet pole 11
The first low-coercivity magnet steel 111 and the first high-coercive force magnet steel 113, the second low-coercivity is arranged in the two sides of the first permanent-magnet pole 11
Magnet steel 112.It should be noted that the first high-coercive force magnet steel 113 and the series connection of the first low-coercivity magnet steel 111 in the present embodiment
Arrangement is meant that the magnetic line of force flows to the arrangement of the first high-coercive force magnet steel 113 from the first low-coercivity magnet steel 111, i.e.,
The equivalent circuit diagram of motor is the first high-coercive force magnet steel 113 and the concatenated arrangement of the first low-coercivity magnet steel 111.
The structure of part series connection the first low-coercivity magnet steel 111 and the first high-coercive force magnet steel 113 is used in the application, the
One high-coercive force magnet steel 113 helps magnetic action to the first low-coercivity magnet steel 111, externally shows that coercivity is promoted, guarantees first
The anti-demagnetization capability of low-coercivity magnet steel 111 is promoted, and becomes the first low-coercivity magnet steel 111 during magnetic flux not by demagnetization electricity
The influence of stream, remanent magnetism is constant, therefore when the second low-coercivity magnet steel 112 plays adjustable magnetic during becoming magnetic flux, and second low rectifys
Stupid 112 magnetic direction of power magnet steel variation, the first low-coercivity magnet steel 111 is magnetic constant, does not play the role of adjustable magnetic.
As it can be seen that after the present embodiment is using the first low-coercivity magnet steel 111 and the series connection of the first high-coercive force magnet steel 113, first
The anti-demagnetization capability of low-coercivity magnet steel 111 is promoted, therefore in adjustable magnetic demagnetization process, can apply bigger demagnetization current,
It realizes the second low-coercivity magnet steel 112 reversely to magnetize, reduces entire motor magnetic linkage.And in conventional structure, it is not provided with
One high-coercive force magnet steel, 113 magnetic assist, cannot apply the structure of too big demagnetization current, therefore the second low-coercivity magnet steel 112
It demagnetizes limited, adjustable magnetic range is also limited, and the structure of the rotor in the present embodiment can effectively improve adjustable magnetic range.
The magnet steel of the second permanent-magnet pole 12 in the present embodiment is the second high-coercive force magnet steel 121, and when actual design, first forever
Magnetic pole 11 and the second permanent-magnet pole 12 are arranged in linear type, and are symmetrical arranged about corresponding pole center line, and tune can be increased
The useful flux area of magnetic pole magnet steel.Certainly, in the other embodiments of the utility model, the second permanent-magnet pole 12 can also be set
It is set to V-arrangement or W-shaped, as long as other modes of texturing under the design of the utility model, in the protection model of the utility model
Within enclosing.
When actual design, the coercive of the first high-coercive force magnet steel 113 and the second high-coercive force magnet steel 121 in the present embodiment
Power may be the same or different.When the first high-coercive force magnet steel 113 and 121 coercivity difference of the second high-coercive force magnet steel,
The coercivity of second high-coercive force magnet steel 121 is higher than the coercivity of the first high-coercive force magnet steel 113, but coercivity difference is 20%
Within.
Similarly, the coercivity of the first low-coercivity magnet steel 111 in the present embodiment and the second low-coercivity magnet steel 112 can
With identical, can also be different.When the coercivity difference of the first low-coercivity magnet steel 111 and the second low-coercivity magnet steel 112, first
The coercivity difference of low-coercivity magnet steel 111 and the second low-coercivity magnet steel 112 can effectively promote magnet steel 3 within 20%
Anti- demagnetization capability.
For the first high-coercive force magnet steel 113 and the second high-coercive force magnet steel 121, in the present embodiment first
Low-coercivity magnet steel 111 and the second low-coercivity magnet steel 112 are relatively low.Such as it is the first low-coercivity magnet steel 111 and second is low
The coercivity of coercivity magnet steel 112 is set as 100 A/m or so, then corresponding first high-coercive force magnet steel 113 and second is high strong
The coercivity of stupid power magnet steel 121 is 1000 A/m or so, practical to be designed according to the specific requirements of motor.
Motor in the present embodiment can apply sufficiently large electric current and change the second low-coercivity during being demagnetized
The magnetism of magnet steel 112 reaches reversed, the anti-demagnetization capability promotion of the first low-coercivity magnet steel 111, during becoming magnetic flux
Second low-coercivity magnet steel 112 is not influenced by demagnetization current, and remanent magnetism is constant；Therefore only second low during entire adjustable magnetic
Coercivity magnet steel 112 plays adjustable magnetic, the variation of 112 magnetic direction of the second low-coercivity magnet steel；And the first low-coercivity magnet steel 111
Due to 113 series arrangement of the first high-coercive force magnet steel, the first high-coercive force magnet steel 113 has the first low-coercivity magnet steel 111
Magnetic assist effect externally shows that coercivity is promoted, therefore adjustable magnetic process magnetism is constant, does not play the role of adjustable magnetic in whole process,
And then has the function that improve the adjustable magnetic range of motor, promotes motor adjustable magnetic multiple.
Referring again to shown in Fig. 1 and Fig. 2, in the first permanent-magnet pole 11, the first low-coercivity magnet steel 111 and the second low coercive
Power magnet steel 112 is H in rotor dislocation distance radially, the second low-coercivity magnet steel 112 in rotor radially
Width is H2, and the first low-coercivity magnet steel 111 is H3 in the width of rotor radially, and the first high-coercive force magnet steel 113 exists
The width of rotor radially is H4, and the second high-coercive force magnet steel 121 is H1 in the width of rotor radially, wherein-
0.5H2≤H≤H3,1.5H2 >=H3 >=H2；0.5H2 >=H4 >=0.2H2, H2 >=1.2H1.Preferably, the first high-coercive force magnet steel
113 length is L2, and the length of the first high-coercive force magnet steel 113 is L4, and the length of the first low-coercivity magnet steel 111 is L3, the
The length of two high-coercive force magnet steel 121 is L1, wherein 1.1L4 >=L3 >=L4；3.3L3 >=2L2 >=3L3, L1≤2L2+L3.In
Under size arrangement, motor adjustable magnetic range is maximum in the present embodiment, fills demagnetization current is optimized.
Preferably, the first low-coercivity magnet steel 111 in the present embodiment, the second low-coercivity magnet steel 112, the first high coercive
Power magnet steel 113 and the second high-coercive force magnet steel 121 can use alnico magnet.
Preferably, the first low-coercivity magnet steel 111 in the present embodiment can mutually recline with the first high-coercive force magnet steel 113
Setting, can also be arranged with predetermined gap.It should be noted that the predetermined gap setting in the present embodiment is meant
It can be put into a magnetic slot.First low-coercivity magnet steel 111 and the first high-coercive force magnet steel 113 can also be placed respectively
In two magnetic slots, there are iron core, the iron core knots among the first low-coercivity magnet steel 111 and the first high-coercive force magnet steel 113
Structure can separate also integrated with rotor.
Another aspect according to the present utility model provides a kind of mechanical structure, the mechanical structure especially compressor, wash
The suitable wideband such as clothing machine runs product.Mechanical structure includes the motor in above-described embodiment.
It can be seen from the above description that the above embodiments of the utility model achieve the following technical effects: motor
During being demagnetized, the magnetism that sufficiently large electric current changes the second low-coercivity magnet steel 112 can be applied, reached anti-
Promoted to the anti-demagnetization capability of, the first low-coercivity magnet steel 111, during becoming magnetic flux the second low-coercivity magnet steel 112 not by
To the influence of demagnetization current, remanent magnetism is constant；Therefore only the second low-coercivity magnet steel 112 plays adjustable magnetic work during entire adjustable magnetic
With the variation of 112 magnetic direction of the second low-coercivity magnet steel；And the first low-coercivity magnet steel 111 due to the first high coercivity magnetic
113 series arrangement of steel, the first high-coercive force magnet steel 113 help magnetic action to the first low-coercivity magnet steel 111, externally show coercive
Power is promoted, therefore adjustable magnetic process magnetism is constant, does not play the role of adjustable magnetic in whole process, and then reaches the adjustable magnetic for improving motor
Range, the effect for promoting motor adjustable magnetic multiple.
It should be noted that the description and claims of this application and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so that presently filed embodiment described herein for example can be in addition to herein
Sequence other than those of diagram or description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that
Be to cover it is non-exclusive include, for example, containing the process, method, system, product or equipment of a series of steps or units not
Those of be necessarily limited to be clearly listed step or unit, but may include be not clearly listed or for these processes, side
The intrinsic other step or units of method, product or equipment.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (11)
1. a kind of rotor, which is characterized in that including rotor body (10), be provided with first forever on the rotor body (10)
Magnetic pole (11) and the second permanent-magnet pole (12), first permanent-magnet pole (11) and second permanent-magnet pole (12) are along the rotor body
(10) circumferential direction is alternately arranged, and first permanent-magnet pole (11) includes the different magnet steel of at least two coercivitys, and described first forever
The the first low-coercivity magnet steel (111) and the first high-coercive force magnet steel (113) of the middle part setting series arrangement of magnetic pole (11), it is described
The second low-coercivity magnet steel (112) is arranged in the two sides of first permanent-magnet pole (11).
2. rotor according to claim 1, which is characterized in that the magnet steel of second permanent-magnet pole (12) is second high
Coercivity magnet steel (121).
3. rotor according to claim 2, which is characterized in that the first high-coercive force magnet steel (113) and described
The coercivity of second high-coercive force magnet steel (121) is identical or different, when the first high-coercive force magnet steel (113) and described second
When the coercivity difference of high-coercive force magnet steel (121), the first high-coercive force magnet steel (113) and second high coercivity magnetic
The coercitive difference of steel (121) is within 20%.
4. rotor according to claim 1, which is characterized in that the first low-coercivity magnet steel (111) and described
The coercivity of second low-coercivity magnet steel (112) is identical or different, when the first low-coercivity magnet steel (111) and described second
When the coercivity difference of low-coercivity magnet steel (112), the first low-coercivity magnet steel (111) and second lower coercivity magnetic
The coercitive difference of steel (112) is within 20%.
5. rotor according to claim 1, which is characterized in that first permanent-magnet pole (11) in linear type arrange,
And the pole center line about first permanent-magnet pole (11) is arranged symmetrically；Second permanent-magnet pole (12) is in linear type or V-arrangement
Or W-shaped arrangement, and be symmetrical arranged about the pole center line of the second permanent-magnet pole (12).
6. rotor according to claim 1, which is characterized in that the first low-coercivity magnet steel (111) and first
High-coercive force magnet steel (113) mutually recline setting or predetermined gap setting.
7. rotor according to claim 2, which is characterized in that in first permanent-magnet pole (11), described first
Low-coercivity magnet steel (111) and the second low-coercivity magnet steel (112) are in the dislocation distance of the rotor radially
H, the second low-coercivity magnet steel (112) are H2, first lower coercivity magnetic in the width of the rotor radially
Steel (111) is H3 in the width of the rotor radially, and the first high-coercive force magnet steel (113) is in the rotor
Width radially is H4, and the second high-coercive force magnet steel (121) is H1 in the width of the rotor radially,
In, -0.5H2≤H≤H3,1.5H2 >=H3 >=H2；0.5H2 >=H4 >=0.2H2, H2 >=1.2H1.
8. rotor according to claim 2, which is characterized in that the length of the first high-coercive force magnet steel (113)
For L2, the length of the first high-coercive force magnet steel (113) is L4, and the length of the first low-coercivity magnet steel (111) is L3,
The length of the second high-coercive force magnet steel (121) is L1, wherein 1.1L4 >=L3 >=L4；3.3L3 >=2L2 >=3L3, L1≤
(2L2+L3)。
9. rotor according to any one of claim 1 to 8, which is characterized in that the first low-coercivity magnet steel
It (111) is alnico magnet.
10. a kind of motor, including rotor, which is characterized in that the rotor is any one of claims 1 to 9 institute
The rotor stated.
11. a kind of mechanical structure, including motor, which is characterized in that the motor is motor described in claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920734628.2U CN209709786U (en) | 2019-05-20 | 2019-05-20 | Rotor, motor and mechanical structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920734628.2U CN209709786U (en) | 2019-05-20 | 2019-05-20 | Rotor, motor and mechanical structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209709786U true CN209709786U (en) | 2019-11-29 |
Family
ID=68651117
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920734628.2U Active CN209709786U (en) | 2019-05-20 | 2019-05-20 | Rotor, motor and mechanical structure |
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| Country | Link |
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| CN (1) | CN209709786U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112821621A (en) * | 2021-03-18 | 2021-05-18 | 哈尔滨工业大学 | Magnetic circuit split type series-parallel adjustable flux motor |
-
2019
- 2019-05-20 CN CN201920734628.2U patent/CN209709786U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112821621A (en) * | 2021-03-18 | 2021-05-18 | 哈尔滨工业大学 | Magnetic circuit split type series-parallel adjustable flux motor |
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